A cylinder, semicircular in cross-section, 10.0 m long and 5.00 m in radius, is completely submerged in water. What is the buoyant force on the cylinder?
A) 1.92 × 106 N
B) 3.85 × 106 N
C) 5.78 × 106 N
D) 6.28 × 106 N
E) 7.70 × 106 N
B
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A horizontal uniform 1.20-N meter stick is held up by two vertical strings, one at the 20-cm mark and the other at the 60-cm mark. What is the tension in the string at the 60-cm mark?
a. 0.30 N b. 0.45 N c. 0.60 N d. 0.90 N e. 1.0 N
What is the symbol for the nuclide with 46 protons and 92 neutrons?
A. 92 46Pd B. 138 92U C. 138 46Pd D. 46 92U
An object has been located orbiting the Sun at a distance from the Sun of 65 AU. What is the approximate orbital period of this object?
a. 65 years b. 275,000 years c. 4225 years d. 8.1 years e. 524 years
A proton moving with a velocity of 4.0 × 104 m/s enters a magnetic field of 0.20 T. If the angle between the velocity of the proton and the direction of the magnetic field is 60°,
what is the magnitude of the magnetic force on the proton? (e = 1.60 × 10-19 C) A) 1.8 × 10-15 N B) 0.60 × 10-15 N C) 1.1 × 10-15 N D) 2.2 × 10-15 N E) 3.3 × 10-15 N